DE602007005630D1 - CODING DEVICE AND CODING METHOD - Google Patents

CODING DEVICE AND CODING METHOD

Info

Publication number
DE602007005630D1
DE602007005630D1 DE602007005630T DE602007005630T DE602007005630D1 DE 602007005630 D1 DE602007005630 D1 DE 602007005630D1 DE 602007005630 T DE602007005630 T DE 602007005630T DE 602007005630 T DE602007005630 T DE 602007005630T DE 602007005630 D1 DE602007005630 D1 DE 602007005630D1
Authority
DE
Germany
Prior art keywords
spectrum data
band spectrum
encoding
signal
band
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
DE602007005630T
Other languages
German (de)
Inventor
Tomofumi Yamanashi
Kaoru Sato
Toshiyuki Morii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp filed Critical Panasonic Corp
Publication of DE602007005630D1 publication Critical patent/DE602007005630D1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition
    • G10L19/0208—Subband vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Error Detection And Correction (AREA)

Abstract

It is possible to provide an encoding device and an encoding method capable of realizing encoding with a very small information amount and a very small calculation amount when encoding higher-band spectrum data according to lower-band spectrum data in a wide-band signal . The device and the method can obtain a high-quality decoded signal even if a large quantization distortion is caused in the lower-band spectrum data. In this device, when encoding higher-band spectrum data in a signal to be encoded, according to lower-band spectrum data in the signal, only for a part (a head portion) of the higher-band spectrum data, the lower-band spectrum data after being quantized is subjected to approximate partial search and higher-band spectrum data is generated according to the search result.
DE602007005630T 2006-05-10 2007-05-09 CODING DEVICE AND CODING METHOD Active DE602007005630D1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2006131852 2006-05-10
JP2007047931 2007-02-27
PCT/JP2007/059582 WO2007129728A1 (en) 2006-05-10 2007-05-09 Encoding device and encoding method

Publications (1)

Publication Number Publication Date
DE602007005630D1 true DE602007005630D1 (en) 2010-05-12

Family

ID=38667836

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602007005630T Active DE602007005630D1 (en) 2006-05-10 2007-05-09 CODING DEVICE AND CODING METHOD

Country Status (6)

Country Link
US (1) US8121850B2 (en)
EP (2) EP2017830B9 (en)
JP (1) JP5190359B2 (en)
AT (2) ATE528750T1 (en)
DE (1) DE602007005630D1 (en)
WO (1) WO2007129728A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
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EP2991075B1 (en) * 2004-05-14 2018-08-01 Panasonic Intellectual Property Corporation of America Speech coding method and speech coding apparatus
JP4871894B2 (en) * 2007-03-02 2012-02-08 パナソニック株式会社 Encoding device, decoding device, encoding method, and decoding method
JP2010079275A (en) * 2008-08-29 2010-04-08 Sony Corp Device and method for expanding frequency band, device and method for encoding, device and method for decoding, and program
JP5326714B2 (en) * 2009-03-23 2013-10-30 沖電気工業株式会社 Band expanding apparatus, method and program, and quantization noise learning apparatus, method and program
WO2011035813A1 (en) * 2009-09-25 2011-03-31 Nokia Corporation Audio coding
JP5754899B2 (en) 2009-10-07 2015-07-29 ソニー株式会社 Decoding apparatus and method, and program
CN102044250B (en) * 2009-10-23 2012-06-27 华为技术有限公司 Band spreading method and apparatus
JP5850216B2 (en) 2010-04-13 2016-02-03 ソニー株式会社 Signal processing apparatus and method, encoding apparatus and method, decoding apparatus and method, and program
JP5707842B2 (en) 2010-10-15 2015-04-30 ソニー株式会社 Encoding apparatus and method, decoding apparatus and method, and program
US8924200B2 (en) * 2010-10-15 2014-12-30 Motorola Mobility Llc Audio signal bandwidth extension in CELP-based speech coder
JP5704397B2 (en) * 2011-03-31 2015-04-22 ソニー株式会社 Encoding apparatus and method, and program
EP3048609A4 (en) 2013-09-19 2017-05-03 Sony Corporation Encoding device and method, decoding device and method, and program
RU2667627C1 (en) 2013-12-27 2018-09-21 Сони Корпорейшн Decoding device, method, and program

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3139602B2 (en) * 1995-03-24 2001-03-05 日本電信電話株式会社 Acoustic signal encoding method and decoding method
SE512719C2 (en) 1997-06-10 2000-05-02 Lars Gustaf Liljeryd A method and apparatus for reducing data flow based on harmonic bandwidth expansion
US6640209B1 (en) * 1999-02-26 2003-10-28 Qualcomm Incorporated Closed-loop multimode mixed-domain linear prediction (MDLP) speech coder
JP3923783B2 (en) 2001-11-02 2007-06-06 松下電器産業株式会社 Encoding device and decoding device
DE60208426T2 (en) * 2001-11-02 2006-08-24 Matsushita Electric Industrial Co., Ltd., Kadoma DEVICE FOR SIGNAL CODING, SIGNAL DECODING AND SYSTEM FOR DISTRIBUTING AUDIO DATA
JP3926726B2 (en) * 2001-11-14 2007-06-06 松下電器産業株式会社 Encoding device and decoding device
KR100935961B1 (en) 2001-11-14 2010-01-08 파나소닉 주식회사 Encoding device and decoding device
EP1470550B1 (en) 2002-01-30 2008-09-03 Matsushita Electric Industrial Co., Ltd. Audio encoding and decoding device and methods thereof
JP4272897B2 (en) * 2002-01-30 2009-06-03 パナソニック株式会社 Encoding apparatus, decoding apparatus and method thereof
AU2003234763A1 (en) * 2002-04-26 2003-11-10 Matsushita Electric Industrial Co., Ltd. Coding device, decoding device, coding method, and decoding method
JP3861770B2 (en) * 2002-08-21 2006-12-20 ソニー株式会社 Signal encoding apparatus and method, signal decoding apparatus and method, program, and recording medium
EP2991075B1 (en) * 2004-05-14 2018-08-01 Panasonic Intellectual Property Corporation of America Speech coding method and speech coding apparatus
JPWO2006025313A1 (en) 2004-08-31 2008-05-08 松下電器産業株式会社 Speech coding apparatus, speech decoding apparatus, communication apparatus, and speech coding method
CN102184734B (en) 2004-11-05 2013-04-03 松下电器产业株式会社 Encoder, decoder, encoding method, and decoding method
JP4431790B2 (en) 2004-11-09 2010-03-17 国立大学法人金沢大学 Resorcinol novolac derivatives
JP4646731B2 (en) 2005-08-08 2011-03-09 シャープ株式会社 Portable information terminal device

Also Published As

Publication number Publication date
EP2017830B9 (en) 2011-02-23
JPWO2007129728A1 (en) 2009-09-17
WO2007129728A1 (en) 2007-11-15
JP5190359B2 (en) 2013-04-24
ATE463029T1 (en) 2010-04-15
US20090171673A1 (en) 2009-07-02
US8121850B2 (en) 2012-02-21
EP2017830A4 (en) 2009-05-27
ATE528750T1 (en) 2011-10-15
EP2200026A1 (en) 2010-06-23
EP2017830B1 (en) 2010-03-31
EP2017830A1 (en) 2009-01-21
EP2200026B1 (en) 2011-10-12

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP

8364 No opposition during term of opposition